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Port 9343 (mpidcmgr)

IANA assigns port 9343 to mpidcmgr: MpIdcMgr.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mpidcmgr TCP MpIdcMgr Yutaka Ono -
mpidcmgr UDP MpIdcMgr Yutaka Ono -

Check what is listening on port 9343

Linux: is anything listening on TCP 9343?
sudo ss -tlnp 'sport = :9343'
Linux: UDP 9343
sudo ss -ulnp 'sport = :9343'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9343
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9343 '
Windows (Command Prompt)
netstat -ano | findstr :9343
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9343 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9343
From Windows
Test-NetConnection HOST -Port 9343
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 9343

Block port 9343 in the firewall

ufw
sudo ufw deny 9343/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9343 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9343 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9343' -Direction Inbound -Protocol TCP -LocalPort 9343 -Action Block
ufw
sudo ufw deny 9343/udp
iptables
sudo iptables -A INPUT -p udp --dport 9343 -j DROP
nftables
sudo nft add rule inet filter input udp dport 9343 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 9343' -Direction Inbound -Protocol UDP -LocalPort 9343 -Action Block

Related ports

9339gnmi-gnoi9340gribi9344mphlpdmc9345rancher

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.